fcp-gradient.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /paint-timing/fcp-only/fcp-gradient.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

<title>Performance Paint Timing Test: FCP should not fire with gradient-only backgrounds</title>

<style>

    #main {

        width: 100px;

        height: 100px;

        background-image: linear-gradient(to bottom, orange, blue);

</style>

</head>

<body>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="../resources/utils.js"></script>

<div id="main"></div>

<script>

  setup({"hide_test_state": true});

  promise_test(async t => {

      assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported.");

      await new Promise(r => window.addEventListener('load', r));

      await assertNoFirstContentfulPaint(t);

  },  'Gradients should not count as contentful');

</script>

</body>

</html>